Automatically threading shuttle for looms



` July, 1929. W, A, TEBO i,7iz2,254

AUTOMATICALLY THREADING SHUTTLE FOR LOOMS Filed July 28, 1928 Csi Patented July 23, i929.

entre arras eier-tig WILLIAM A. TEBO, OF ANTHONY, RHODE ISLAND, .ASSIGNOR T DRAPER CORPOR- Tron, or nornnnnn, Massacnusnr n con-ronefrron or Marian.

AUTOMATICALLY THREADNG SHUTTLE FOR LOOIVIS.

Application filed July 28, 1928. Serial No. 295,815.

This invention relates to automatically threading shuttles for looms and is more particularly directed to means for locking the thread in the side delivery eye that the shuttle may not become unthreaded.

lt is now the common practice to provide automatically threading shuttles for looms with over-hangs, guards and other devices to prevent the shuttle from becoming unthreaded during weaving operations, but notwithstanding` vthe general purpose of such guards and overhangs their obj ect has often failed to be accomplished in actual weaving.

The object of the present invention is to provide an automatically threading shuttle with means which will permit the shuttle to be automatically threaded while in the loom and thereafter to lool: the thread in lshuttle threaded position.

ln accordance with the present invention, t-he shuttle is provided with a thread lock which crosses the thread passage leading to the vside delivery eye and cooperates with the usual downwardly extending horn of the threading block to prevent upward movement of the thread from the side delivery eye when once the shuttle has been completely threaded. More speciically stated, the thread lock of the present inventionis provided with a slot or opening into which a part of the threading 'block7 such, for instance, as the horn, extends,

the constructionV being such that once the thread has passed Athrough the thread passage leading` to the side delivery eye, it is thereafter locked in the side deliveryeye to lead under the horn.

rllhe invention and novel features thereof will best be made clear from the following description and the accompanying drawings of one good form thereof.

In the drawings: I

'Fig'. l is a perspective view of an automatically threading shuttle, showing more particularly the eye end thereof, provided with the present invention; i

Fig. 2 is a sectional side elevation on an enlarged lscale showing the thread lock and horn in their normally operative position;

Fig. 3 is a front elevation of the threading block and. thread lock looking from the front of the shuttle; Y

Fig. 4 is an underside view of the lock and thread block;

Fig. 5 is a perspective view Vshowing the threading block and its associated relation with the thread lock; and n Fig. 6 shows a modification.

The shuttle l may be of the usual automatically threading type provided with the hobhin chamber 2 frontward of which the shuttle its provided with-a thread block receiving chamber 3 in which the threading` block l is positioned and held by means of the usual transversely extending screw 5. -The shuttle is provided with the usual longitudinally eX` tending thread passage 6 and side delivery eye 7 which communicates therewith. i

rlhe threading block may be of any of the usual types of such blocks provided with a downwardly extending horn, the lower portion of which overlies the thread and directs it to th-e side delivery eye during the weaving operation. The threading block provides a thread passage leading from the top portion of the shuttle to the side delivery eye to permit the thread to pass downwardly to the side delivery eye on the second pick of the shuttle after filling replenishment. f

In thepresent instance of the invention, the threading block 4 has the usual longitudinal thread passage 6 formed between' the side walls of the threading block, as indicated in Fig. 3, and at the front portion ofthe threading block is a thread director 8 between which and the wood of the shuttle7 at 9, is formed a thread passage l() leading downwardly to the side delivery eye 7. Extending downwardly from the top portion of the threading block is the horn 1l preferably formed with a guiding surface 12 under which the thread passes on itsway to side deliveryV eye during weaving. lt is. seine-- times desirable to provide the threading block with a stud 13 to engage an opening le in the shuttle to assist in positioning and holding the threading block in place. As thus far described, the threading blockl may be of usual construction and the wood of the shuttle may be lcut away or removed at l5 leading towards the tip end of the shuttle, to provide a thread leader, the construction being such that upon the iirst pick of the shuttleV following replenishment, the thread will be drawn from tne lilling carrier in the shuttle and enter the recess'or'cut away portion 15 and on the next pick of the shuttle the thread will be drawn downwardly through the thread passage l0 into the side delivery eye' 7, whereupon the lshuttle is completely threaded. The present part ot the horn, in the present instance, projects. The 'thread lock 16 may be variously secured in place and as shown may have a hase portion 17 underlying the rthread blocl "t, and, it desired, have an opening k18 through which-the stud 13 may project to assist in holding` the thread loch in position.

y The thread lock 16 entends upwardly from a point below the horn 11, as indicated ,in Fig. 2, and between its lowei and upper portions it is provided with an opening or slot 19 into which a part ot the horn, as at 20, extends. In most cases the part 20 of the horn, which is downwardly. curved, as indicated, may project through the slot or opening 19 of the thread loch. Thepoint 21 `oi the horn may extend through the slot or opening of the thread lock and terminate above the lower portion ot the opening or' slot, the construction being such that on the second pick tollowingreplenishinent the thread will pass downwardly in the thread passage 10 and be deflected through the slot 19 ot the lock about thedownwardly curved. portion ot the horn, as indicated-at a, Fig. 5. Asthe tension of the thread thereafter pulls it rdownwardly in the direction of the side delivery eye, it linally will take position below the arched portion 12y ot the rhorn and entend to the side delivery eye 7,v and thereafter any upward movement ot the thread tending tofcast it out oit the thread pl eje 10 will be prevented by the oveilapping relation of the slotted thread vlock 16 and the downwardly entendinghorn. The slot of the thread lock constitutes an 1in- '.portant eatureoit the present invention, and -while forined asa slot, it is obvious, of course, that one side portion or wall ot the slot may thereby obviating anyV danger of the thread catching on the end of the thread loclr as it passes downwardly the thread passage 10.

A. pin 24 may be conveniently employed, as indicated in Fig. 2, so that the thread may lead about the. pin rduring vits delivery from V the shuttle, and` the 'pinf24 may be provided f2 y Y matassa with an end portion 25 26 toi-ined in the thi ea extending into the hole d l assisting in holdingv the och, thereby iurthcr d, thread loch in its normally operative position during the shocks to which the shuttle is vsubjected during the weaving operation.

lnstead of securing the base portion 17 of the thread lock in the manner hereinbefore dcscribed and as shown by 2, the base portion ot the threat lock may be otherwise secnred in place, as indicated, for instance, in Fig. 5, wherein the base portion is secured to thethreading lock' or stud 13 by solder or the like, as indicated at 27. Y

The essential. vfeature ot the thread lock oit the present invention consists in its overlapping relation with the horn of the threading block so that while the thread may passdownwardly in the thread passage 10 and be 'dei'lected about the horn and thread lock, it will eventually take aposition where its upward movement will be prevented by the overlapping relation of the horn and thread lock.

While the'slotted character ofthe thread lock 16 is found to be a good pry cti'cal form oic the invention, it is obviousthat variations may be made in the thread lock to ca 1ry out the essential `features oft 'the invention, and one of such variations is` indicated in Fig. 6 wherein the thread lock is torined as a single unslotted upwardly inclined member 28 in overlapping relation with the downwardly extending horn, suilicient space being` provided between the two to.y permit the thread to pass downwardly belowV the horn into the side delivery eye, from which its escape is rendered impossible during the weaving operation.

TWhat is claimed is:

1. An automatically threading looin sluit- .tle having a side delivery eye, a threading block orniing a side threading passage loading to the side-delivery eye-and provided with a. downwardlyI extending` horn, and a thread lock extending in an inc-lined direction across theyside threading passage in overlapping relation with the lower point of the horn and having its lower and ripper ends resting on the wood of the shuttleat opposite sides of the side threading passage.

2. An automatically threading loom shuttle having a side delivery eye, a threading block forming a threading passage fleading to the 'side delivery eye, a thread lock having one end secured at the lower portion ot the threading block and its other end seated in the shuttle wood above the lower portion or" the block at the opposite side of the 'thread passage leading to the side delivery eye and provided with ka slot, and a horn extending downwardly fromv the top of thehloch with its lower point extending intol the slot of the loch.

3. An automatically threading-loom shutipse-,25e

tle havinO a side deliver i e e a threading- :D .l 7 a block forming a side threading passage leading to the side delivery eye, a thread-lock crossing the thread passage in an inclined direction with its lower end secured at the lower part of the block adjacent the side Idelivery eye and its upper end seated in the wood of the shuttle at the opposite side of the thread passage and provided with a slot or opening between its ends, and a horn extending downwardly and 'backwardly from the upper part of the black with its point projecting into the opening orslot of the lock.

4t. An automatically threading loom shuttle having a side delivery eye, a threading block forming a side threading passage leading to the side delivery eye, a horn extending downwardly and baclwardly from the top of the block and having a thread guiding surface under which the thread is delivered to the side eye, and a thread lock having its lower end secured at the lower part of the block and crossing the thread passage in overlapping relation with the point or the horn with the upper end of the lock seated in the woo-d of the shuttle above the point of the horn at the opposite side of the threading passage to prevent upward movement of the thread from the side delivery eye.

5. An automatically threading loom shuttle having a side Idelivery eye, a thread director forming a threading` passage leading to the side delivery eye, a horn extending downwardly and backwardly from the thread director and having a pointed lower end under which the thread passes .during threading, a thread guiding surface formed at the vlower part of the horn back of the pointed end thereof, a thread loclr secured to the shuttle below the end ot' the horn and thread on its way to the side delivery eye and extending upwardly in overlapping relation with the pointed end ot the horn with its upper end seated in the wood of the shuttle at the opposite side of the threading passage and frontward of the horn.

6. An automatically threading loom shuttle having a side delivery eye and a threading seated in the wood of the shuttle at the opposite side of said passage and provided with an opening between its ends, and a horn having a part projecting into said opening andv cooperating with the threadlock to prevent upward .escape of the thread from the side delivery eye.

7. An automatically threading loom shuttle having a threading block vprovided with a horn extending downwardly and backwardly from the top oi' the block and a thread director i-ormingathread passage leading to the side delivery eye, and a thread lock extending across the thread passage from below the end of the horn and having an elongated opening through which the lower portion of' the horn extends with suiiicient space between to permit deflection of the thread about the horn on its way to the side delivery eye as the shuttle is completely threaded.

8. An automatically threading loom shuttle having a side ydelivery eye and a thread passage leading to the side delivery eye, a horn extending downwardly and bacliwardly from the top of the thread passage under which the thread leads to the side Idelivery eye during weaving, a thread lock extending from a point below the horn and crossing the thread passage in overlapping relation with the horn, the upper end of the thread lock being seated in the wood of the shuttle at the front of the thread passage to prevent catching the thread as the latter moves towards the side delivery eye. l y v 9. An automatically threading loom shuttle having a side delivery eye and a thread passage leading to the side delivery eye, a threading block having a longitudinal thread passage and a downwardly extending pointed horn under which the thread leads to the side delivery eye kduring weaving, a separate thread lock secured at and extending from a point rearward of and below the horn andl wrLtrAMii. reso, 

